A Study on Hardened Properties of High Performance Concrete by Partial Replacement of Cement with GGBS and Fly Ash

concrete is probably the most extensively used construction material in the world. Anyway, the production of the Portland cement (PC) as a necessary constituent of concrete can basically lead to the dangerous impacts on our environment by such as releasing the consequential amount of CO2 that is one of the greenhouse gases responsible for global warming. The emission CO2 level for PC is cited as nearly one ton per ton. It means that production of one ton of PC can lead to produce about one ton of CO2 and other greenhouse gases. Decreasing in use of PC and its replacement with industrial waste products as cement partial replacement will have positive effect on environmental, social and economic aspects of each society which are essential in Sustainable Development (SD). The purpose of this paper is to review on the specifications, production method and the degree of effectiveness of some industrial byproducts such as GGBS, and Fly Ash as the cement replacement in achieving high strength and sustainable concrete which can lead to not only improving the strength of the concrete but also reduction of ECO2 by reducing the amount of PC, and that how they can affect in cheap, environmental and social aspects positively. Most of the fly ash is considered as waste, vacant in landfills and GGBS exhibits cementitious as well as pozzolanic uniqueness so it is quite right in choosing of fly ash and GGBS for concrete mix.